Abrasion testing machine



Jan. 12, 1932.

' Y ABRAsIoN TESTING MACHIMv Filed May 27, 1929 3 Sheets-Sheet l s. WEINBERG 1,841,167

Jan. 12, 1932. S WElNBERG ABRAsIoN TESTING MACHINP Filed May 2, 1929 3 Sheets-Sheet 2 Jan. 12, 1932. s WElNBERG 1,841,167

ABRASION TESTING MACHINE Filed May 27,' 1929 3 Sheets-Sheet 3 v wf/vra@ F/G-3. /v/r/vfss.-

Patented Jan.l 12, 1932 UNITED 4s'rA'rizs PATENT OFFICE SOLOMON WEINBEBG, l' PHILADELPHIA, PENNSYLVANIA, ABSIGN-'OB TOINDUBTBIAL BYrPBODUCTS t RESEARCH CORPORATION, 0F PHILADELPHIA, PENNSYLVANIA, A I

` COBIORATION OF DELAWARE ABRASIOI TESTING HAUHUE Application led lay 27,

This invention relates to a machine for testing the abrasion resisting qualities of materials and more particularly relates to a machine for making a determination of the abrasion resisting qualities of fabrics.

1;, the provision of means whereby the machine may be .opened to facilitate the replacement of materials being tested.

Still another object of the invention resides in the provisionof a device for counting the reciprocations of the mechanism to determine the resistance of the materials bein tested.

Other objects of the invention re ating primarily to details of construction will be apparent from the following description read 1n conjunction with the accompanying drawin s, in which:

i ig. 1'is a plan view of the improved machine. i Fig. 2 is a vertical. section on line- 2-2 of gig. 3 is a vertical section on line 3-3 of Fi 1 and 2.

'lie machine comprises a base 2 supporting a frame carrying the movin arts and providing a support for one o t e ortlons of sheet material being tested. The rame. 4 carried by the base is provided with upstanding ears in which is journalled a rod 6 to which are secured rearwardly extending frame D members 8 connected at their rear ends by a rod 10 extendin in parallelism with rod 6. Members 8 are b i urcated at their rearv ends for the reception of bolts pivoted tothe rear of frame .4 and provided with -thumb nuts 12 which may be secured downwardly against members 8 to hold the frame formed by members 6, 8 and 10 in its lowered position, as 'shown in full lines in Fig. 3.

The forward ends of members 8 are ex.- l tended upwardly to provide brackets sup-v 199e. umu n. :una

is provided with 4a vertical slot in which slides block 24 pivotally securedv to a link of a chain 26 trained about sprocket wheels 28, one of which is connected to a worm wheel 30 driven by worm 32 mounted on the shaft of a .o

motor 33. As the motor operates the chain 26 continuousl in one direction, the block 24 will carry s ide 20 along track 22 and impart a reciprocating movement thereto, since block 24 is free to slide vertically within slot 20 as the chain v.which carries the block passes about sprocket wheels 28. The reciprocating movement of slide 201s imparted to segment 14, to the opposite sides of which are connected the ends of a chain 34 trained around guiding sprockets 36 and secured to a slide 38, as shown in Fig. l. y

Slide 38 is rovided, on its front and rear ends, with rol ers 40 engaging rods 6 and 10 in a suitable anti-friction manner to provide free -reciprocatin movement of the slide opposite to that o segment 14. Brackets 42, extending upwardly from the sides of slide 38, are apertured to slide upon a guide rod 44 sup orted by members 8.

S ots 46 are provided in slide 38, extending` in a direction transverse to that of its reciprocating movement. A supporting member 48 is provided with blocks slidable within slots 46 and serving to support it for transverse movement relative to slide 38. Member 48 is provided with lrollers 50 engaging the opposite sides of a curved track 52 -supported by the members 8. Accordingly, as reciprocating movement is imparted to slide- 38 in a direction parallel to rods- 6, 10 and 44, the supporting member 48 artakes in this reciprocating movement an at the same time has imparted thereto a transverse movement by means of curved track 52 so that a curvilinear movement relative to base 2 results.

Member 48 is provided with a suitable su porting bracket 54, in which are slidab y mounted 56 supportinga carriage 58. 100

l The rods are pressed downwardly by springs iti 60, thus serving to force the carriage toward the base.

base 2, so that the base securely supports a sheet 64 of the material being tested. Similarly, carriage 58 is provided with prongs 66 serving to securely hold thereon a sheet 68 of the material being tested, so that durin the operation of the machine sheets 64 an 66 are moved in contact with each other to produce abrasion. By reason of the curvilinear movement of t ie carriage relative to the base, abrasion is eiected which will not be directly in parallelism with either the Warp or weft ofthe materials, if woven materials are used. instead, an abrasive action compar' able to that which occurs in the wearing of clothing by, for example, the abrasion of a sleeve with a coat, such as would occur durin the swinging of the arms, will be effected.

y reason of the fact that rod 6 is journalled in frame 4, the entire frame, consisting of members 8 .and the carriage and other parts carried thereby, may be swung from the full line positionof Fig. 3 to the dotted line position, thereby facilitating the replacement of the materials 64 and 68. At thesame time, the current through motor 33 is Jautomatically interrupted by reason of the connection of a link between an arm carried by rod 6 and a suitable switch, indicated diagrammatically at 72.

In order to make a determination of the abrasion resulting from a predetermined number of reci rocations of the carriage, a rod 74 is slida ly mounted in the' frame 4 and is-provided lwith turned ends 76 adapted to contact with the sides of segment 14 during the. reciprocation thereof.y Rod 74 carries a cam 78 which acts upon a roller 8O carried by a spring pressed 'rod 82, whereby, uponeach reciprocation of `segment 14, the counter 84 is actuated to register such reciprocation. lThe materials may dbe examined after the counter registers any predetermined number of reciprocations.

lrVhile there are shown two pieces 64 and 68 which were stated to be of the same material, it is obvious that the two pieces may be of different materials, or, alternatively, a piece of fabric may be carried by either the carriage or the supporting base, while the other member is provided with a surface of some suitable abrasive material, so as to determine the action of such abrasive material on the fabric. Instead of fabrics bein placed on the machine, it will, of course, e obvious that other materials may be suitably mounted on the carriage and base.

By reason of the provision of segment 14, it will be seen that the connection between block 18 and this segment is not disturbed during the opening of the device for the replacement of materials. By reason of this mode of connection, there is no time lost in l -reassembling the operative parts in ordergto Prongs 62 are provided, as indicated in. Figs. 2 and 3, along the transverse edges of renew the operation. The use of they automatic switch 72 serves to start and stop the operation accordingly as the carriage is` moved to or from its operative position.

What I claim and desire'to protect by Letters Patent is:

1. A machine of the character described comprising a support, a movable device, said support and device having opposed surfaces over which materials .may be supported in surface coiitactwitli each other, a curvilinear guide for the device, and means for imparting reciprocating movements to the device, whereby it is guided in a curvilinear path across the surface of the support. v

2. A machine of the character described comprising a support, amovable device, said support and device having opposed surfaces over which materials may be supported in surface contact with each other, a -curvilinear y .ment relative thereto, means for imparting reciprocating movement to the member, and means for guiding the carriage in a curvilinear path across the surface of the support during the linear movement of said member.

4. A machine of the character described comprising a support having a base portion and a top frame portion pivoted to the base portion, a movable device, saidbase portion and device having opposed surfaces over which materials may be supported in surface contact with each other a curvilinear guide for-the device, means or imparting recipf rocatory movements to the device, whereby it is guided in a curvilinear path across the surface of the base portion, 'and means mounting the device on the top frame portion whereby it may be removed from cooperation with the surface of the base portion upon pivotal movement of the top frame portion.

5. A machine of the character described comprising a support having a base portion and a top frame portion pivoted to the base portion, a movable device, said base portion and device having opposed surfaces over which materials may be supported in surface .contact with each other, a curvilinear guide for the device, means for imparting reciprocatory movements to the device, whereby it is Y movement of said member,

guided in a curvilinear path across the surface of the base portion, and means mounting the device on the top frame portion whereby it may be removed from cooperation with the surface of the base portion upon pivotal movement of the top frame portion, said movement imparting means including connections whereby the operative condition is maintained during pivotal movement of the top frame portion.

6. A machine of the character described comprising a support, a movable device, said support and device having opposed surfaces over which materials may be supported in surface contact with each other, means for guiding the device in a curvilinear path, means for imparting reciprocatory movements to the device, whereby it is guided in a curvilinear path across the surface of the support, and means for registering the reciprocations of the carriage.

7. A machine of the character described comprising a support having a base portion and a top frame portion pivoted to the base portion, a movable device, said base portion and device having opposed surfaces over which materials may besup orted in surface contact with each other, an means supporting the device on the top frame portion and guiding it for curvilinear movement across the surface of the base portion, whereby the device may be lifted from the base portion upon pivotal movement of the top frame portion.

8. A machine of the character described comprising a support having a base ortion and a top frame ortion pivoted to t e base portion, a movab e device, said base portion and device having opposed surfaces over which materials may be supported in surface contact with each other, means supportin the device on the top frame portion and gui ing it for curvilinear movement across the surface of the base portion whereby the device may be lifted from the base portion upon pivotal movement of the top frame portlon, and means for imparting reciprocating movements to the device, said means includin connections whereby the operative condition is maintained during pivotal movement of the top frame portion.

9. A machine of the character described comprising a support, a carriage, said support and carriage having opposed surfaces over which materials may be supported in surface contact with each other, a member mounted on the support for linear movement, the carriage being supported by the member for movement relative thereto, means for guiding the carriage in a curvilinear path across the surface of the support during linear a continuous flexible element moving in one direction, an element connected to the member and guided for linear movement, and a slide and slideway connection between the flexible element and the last mentioned element whereby continuous movement of the flexible element imparts a reciprocatory movement to the member through the intermediate connections.

In testimony of which invention, I have hereunto set my hand, at Philadelphia,I Penn- Sylvania, on this 27th da of April, 1929.

SOLOM N WEINBERG. 

